Evaluation of Time-Critical Communications for IEC 61850-Substation Network Architecture

Present-day developments, in electrical power transmission and distribution, require considerations of the status quo. In other meaning, international regulations enforce increasing of reliability and reducing of environment impact, correspondingly they motivate developing of dependable systems. Power grids especially intelligent (smart grids) ones become industrial solutions that follow standardized development. The International standardization, in the field of power transmission and distribution, improve technology influences. The rise of dedicated standards for SAS (Substation Automation Systems) communications, such as the leading International Electro-technical Commission standard IEC 61850, enforces modern technological trends in this field. Within this standard, a constraint of low ETE (End-to-End) latency should be respected, and time-critical status transmission must be achieved. This experimental study emphasis on IEC 61850 SAS communication standard, e.g. IEC 61850 GOOSE (Generic Object Oriented Substation Events), to implement an investigational method to determine the protection communication delay. This method observes GOOSE behaviour by adopting monitoring and analysis capabilities. It is observed by using network test equipment, i.e. SPAN (Switch Port Analyser) and TAP (Test Access Point) devices, with on-the-shelf available hardware and software solutions

Mucus and ciliated cells of human lung : splitting strategies for particle methods and 3D stokes flows

Lung walls are covered by a film of mucus, whose motility is fundamental for a healthy behavior. Indeed, mucus traps inhaled aerosols (bacteria, dust, ...), and moves from smallest to largest airways, until it reaches esophagus where is it swallowed or expectorated. A lot of biological parameters are responsible for mucus motion [6], such as the vibrations of ciliated cells covering lung walls (cilia height, frequency, ...), mucus/air interaction, water saturation in mucin network, mucus thickness

A Bayesian network for diagnosis of networked mobile robots

International audienceThe network of communicating mobile vehicles is a subclass of Wireless Networked Control Systems (WNCS) characterized by wireless communications and mobile nodes. The integration of the wireless network into control loop, given the stochastic aspects of wireless communication and mobility of its communicating entities, can lead to problems that affect system performances. In other words, the system quality of control QoC depends on the wireless network quality of service QoS state. A diagnosis method is essential to monitor, diagnose and maintain the system in an operational state. The present paper proposes a modular multi-layer Bayesian network model for diagnosis taking into account the network failures. Results regarding the system performance are presented to illustrate the relevance of the developed Bayesian Network BN to decisions making in order to lead the system to its final goal

Experimental Evaluation of an IEC 61850-Station Bus Communication Reliability

National audienceRecent improvements, in electrical power transmission and distribution, require considerations of existing regulations that enforce increasing of reliability and reducing of environment impact. Smart grids become industrial solutions that follow standardized development. These technologies are affected by international standardization in the field of power transmission and distribution. This study emphasis on modern SAS (Substation Automation System) communication standards, e.g. IEC 61850 GOOSE (Generic Object Oriented Substation Events), to present an experimental method to calculate End-To-End delay by utilizing monitoring capabilities and using network equipment such as SPAN and TAP devices

Retours d'expériences sur la mise en oeuvre d'une Licence Professionnelle internationalisée en Réseaux et Télécommunications

Dossier spécial : Formations internationalesInternational audienceUn groupe d'étudiants de la Licence Professionnelle " Réseaux Sans Fil et Sécurité " de l'IUT de Grenoble a été internationalisé depuis la rentrée 2007. Ce groupe est constitué d'étudiants provenant de divers pays, en majorité non francophones, ce qui signifie que tous les enseignements sont en anglais. L'objectif de cette formation est de mettre en oeuvre une formation anglophone, dans un contexte international. Les étudiants préparent la Licence soit en inscription directe, soit par l'intermédiaire d'accord d'échanges bilatéraux (Brésil, bientôt Malaisie ou Palestine) ou d'accords ERASMUS, ils peuvent dans ces cadres obtenir pour certains un double-diplôme. La mobilité est encouragée, y compris pour les étudiants français qui participent à l'aventur

On the way of harmonization of PhD in Europe in Electrical and Information Engineering: status and recommendations

International audienceIn the frame of the thematic networks devoted to the development of LifeLong Learning (LLL) in Europe, the ELLEIEC project, more especially focused on Electrical and Information Engineering, the situation of PhD students in Europe was analyzed. Thanks to a questionnaire submitted to all the members of this network, an overview on 23 European countries was obtained. This paper tries to highlight the several aspects of the status and proposes recommendations in order to make easier the mobility and exchange in Europe at PhD level. The final part of this work is devoted to recommendations to the European partners in order to improve the present situation and to create a real European space for doctoral studies

New lift safety architecture to meet PESSRAL requirements

ISBN : 978-1-4799-8171-7International audienceAs part of new lift control generation, we will analyze a transition case from an electrical/electro-mechanical components to a networked control system. The main element we focus on in the lift system is the safety chain. This paper will describe the analysis of dependability requirements (IEC 61508) for the next electronic lift control